Merge add-claude-plugin branch to unite PRs #42 and #43

Author: MaxGhenis

.claude/settings.json

@@ -0,0 +1,10 @@
+{
+  "plugins": {
+    "marketplaces": [
+      "PolicyEngine/policyengine-claude"
+    ],
+    "auto_install": [
+      "analysis-tools@policyengine-claude"
+    ]
+  }
+}